Printing-machine.



No. 773,970. V PATENTED NDV. 1, 1904. T. M. NORTH.

PRINTING MACHINE.

APPLICATION FILED APR. 28, 1904.

N0 MODEL. ZSHEETS-SHEET L.

MM 1 C iii fraud/am KS" i' MLQMN PATENTED NOV. 1, 1904.

T. M. NORTH. I PRINTING MACHINE.

APPLICATION FILED APR. 28, 1904.

2 SHEETS-SHEET 2.

N0 MODEL.-

m, V 1 7 a w I. i p y///// 6 0 w I l|||||| UNITED STATES Patented November 1, 1904.

PATENT OEErcE.

THOMAS MERRIFIELD NORTH, OF ALTRINOHAM, ENGLAND, ASSIGNOR TO LINOTYPE AND MACHINERY LIMITED, OF LONDON, ENGLAND.

PRINTING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 773,970, dated November 1, 1904. Application filed April 28, 1904. Serial No. 205,362. (No model.)

To rtZZ whom it may concern.-

Be it known that I, THOMAS ,MERRIEIELD NORTH, of Kingswood Lodge,Ellesmere Road, Altrincham, county of Chester, England, have invented certain new and useful Improvements in Printing-Machines; andI do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains IO to make and use the same.

The present invention relates to improvements in the tripping mechanism of rotary printing-machines, and has more particular reference to the means for tripping the ink- I 5 ing-rollers of the printing-cylinder. These means are both automatic and manual, the automatic tripping being effected conjointly .with the tripping of the impression-cylinder and from the same shaft and the manual tripping being effected by the operator independently of the tripping of the impression-cylinder.

The combination of automatic and manual tripping is not new 1201' so, that system, for ex- 2 5 ample, having been described in the specification of my application for Letters Patent, Serial No. 170,605; but the means employedaccording to the present invention are believed to be new.

0 In the accompanying drawings, which are to be taken as part of this specification and read therewith, Figure 1 is a side elevation of as much of a rotary printing-machine as is necessary to illustrate the present invention,

the side represented being that which is known as the feeder side. Fig. 2 isa vertical section on the line 2 2 of Fig. .1, but drawn to a scale larger than that to which the latter figure is drawn. Fig. 3 is a horizontal section 4 taken partly on the line 3 3 of Fig. 1 and drawn to the same scale as that to which Fig. 2 is drawn; and Fig. i is a side elevation, partly in section,of detached portions of Fig. 1.

The tripping of the inking-rollers 1, Fig. 1,

is effected by the longitudinal movement viz. the movement toward the left of Fig. 1 of two cam-bars 2, one at each side of the machine. In Fig. 1 only the cam-bar at the feeder side of the machine is shown. The

tripping of the impression-cylinder 3 is effect- 5 ed by the rocking of a shaft 4: from a cam 5, fast to the printing-cylinder 6, and through segmentalgear 7 8, the reception of such rocking motion by the said shaft 4: being under the control of a hand-lever 9. Both of the above-named tripping mechanisms and the manner in which they are caused independently of each other to fulfil their respective functions are practically identical with those more fully described in the before-mentioned 6O specification, and individually they form no part of the present invention.

' In carrying the presentinvention into effect an arm 10 is rigidly fixed, as by a key 11, Fig.

3, upon the shaft 4: at the outer side of the 5 bearing 12, which supports the said shaft at the feeder side of the machine. On this arm 10 are pivoted two pawls 13 14, parts of which form outwardly-projecting toes 15 16, respec tively, and each pawl is drawn inwardly to- 7 ward the shaft A by one or two similar springs 17 attached to the said pawls and to a pin 18, fast to the arm 10, or other pawl-controlling devices may be provided instead of the springs 17. The toes 15 16 are adapted to engage with adjustable abutments located in the path -of the said toes, the said abutments, as shown in the drawings, being conveniently in the form of set-screws 19, adjustable in lugs 20, fast upon the main frame of the machine. 30

Between the arm 10 and the bearing 12 there is loosely pivoted on the shaft 4 a disk 21, having a peripheral recess terminated at its opposite ends in abutments 22 23, with which the two pawls 13 14% are respectively adapted to 5 engage. The disk 21 also rigidly carries a stud 2 1, by which the lower end of a connecting-rod 25 is pivoted to it, the upper end of this rod being similarly pivoted to an arm 26, integral with a hand-lever 27. fast on-a trans- 9 Verse rock-shaft 28.

As previously mentioned, the transmission of motion from the segmental gear 7 8 to the rocking shaft 4 is controlled by the hand-lever 9. The normal position of this hand-lever that is to say, the position which it occupies during the normal working of the printingmachineis that in which it is represented in Fig. 1, and when it is desired to simultaneously trip the inking-rollers 1 and the impression-cylinder 3 it is necessary for the operator only to move the hand-lever 9 toward the left, the machine thereafter automatically completing the tripping operation. The leftward movement of the lever 9 causes a pawl 29 to be thrown into the path of an abutment 30, (see particularly Fig. 1,) so that at the next upward swing of the segment 7 the rocking shaft 4 is turned in the direction indicated by the arrow adjacent to that shaft in Fig. 1 and the impression-cylinder 3 is tripped, all as described in the before-mentioned specification. This rocking motion of the shaft 1, however, also swings the arm 10 to the left, bringing the toe 16 of the pawl 14 out of engagement with the appropriate set-screw 19, so as to allow the appropriate spring 17 to draw the said pawl into an operative position, and also bringing the pawl 13 into engagement with the abutment 22. hen the pawl 13 and abutment 22 are thus engaged, the continued movement of the'arm 10 effects the turning of the disk 21, which, through the connecting-rod 25 and lever 27, imparts leftward movement to the cam-bars 2, and thereby, as described in thebefore-mentioned specification, effects the tripping of the inkingrollers 1. Near the end of the leftward swing of the arm 10 the toe 15 of the pawl 13 abuts against the left-hand set-screw 19, so that by the further movement of the said arm the pawl 13 is thrown out of engagement with the abutment 22. The machine will then remain in its tripped condition until the hand-lever 9 is next returned to the normal position in which it is represented in Fig. 1, the segments 7 and 3 meanwhile rocking backward and forward at each rotation of the printing-cylinder 6, but imparting no motion to the rocking shaft 1. hen, however, the hand-lever 9 is returned to the normal position, a pawl 31 is brought into position to be engaged by an abutment 32, as shown in Fig. 4%, whereby at the next ensuing leftward swing of the segment 7 the shafts is turned in the direction indicated by the arrow in Fig. 4. This motion of the shaft 4: effects, as ordinarily, the return of the impression-cylinder 3 to its normal working position and by the engagement of the pawl 14 with the abutment 23 causes the turning of the disk 21 and the rightward movement of the cam-bars 2, so as to allow the inking-rollers 1 to descend by gravity into proper working contact with the printingcylinders.

When it is desired to trip the inking-rollers 1 without also tripping the impression-cylinder 3, this is effected, as ordinarily, by moving the hand-lever 27 toward the right. By this operation, through the connecting-rod 25, the disk 21 will be caused to rock on the shaft 1; but it will have no effect on the arm 10.

I claim- 1. The combination with the printing-cylinder of a printing-machine, of inking-rollers and impression-cylinder both adapted to be tripped; automatic means, including a rocking shaft, for tripping the impression-cylinder; a cam on the printing-cylinder to rock the rocking shaft; an arm fast to the rocking shaft and a disk loose thereon; oppositelypresented abutments on the disk; independent pawls on the arm each adapted to engage one of the disk-abutments; cams and cam-bars for tripping the inking-rollers; and means operatively connecting the disk with the cam-bars.

2. The combination with the printing-cylinder of a printing-machine, of inking-rollers and impression-cylinder both adapted to be tripped; automatic means, including a rocking shaft, for tripping the impression-cylinder; an arm fast to the rocking shaft and a disk loose thereon; oppositely-presented abutments on the disk; pawls on the arm, each adapted to engage one of the disk-abutments; springs in operative connection with the pawls to move them into'position to engage the diskabutments; stationary abutments inthe paths of the pawls adapted to move the latter into inoperative positions, cams and cam-bars for tripping the inking-rollers; and means operatively connecting the disk with the cam-bars.

3. The combination with the printing-cylinder of a printing-machine, of inking-rollers and impression-cylinder both adapted to be tripped; automatic means, including a rocking shaft, for tripping the impression-cylinder; a cam on the printing-cylinder to rock the rocking shaft; an arm fast to the rocking shaft and a disk loose thereon; oppositelypresented abutments on the disk; pawls on the arm, each adapted to engage one of the disk-abutments; means in operative connection with the pawls to move them into position to engage the disk-abutments; stationary abutments in the path of the pawls, adapted to move the latter into inoperative positions; cams and cam-bars for tripping the inkingrollers; and means operatively connecting the disk with the cam-bars.

1. The combination with the printing-cylinder of a printing-machine, of inking-rollers and impression-cylinder both adapted to be tripped; automatic means, including a rocking shaft, for tripping the impression-cylinder; a cam on the printing-cylinder to rock the rocking shaft; an arm fast to the rocking shaft and a disk loose thereon; oppositelypresented abutments on the disk; independent pawls on the arm, each adapted to engage one of the disk-abutments; cams and cam-bars for tripping the inking-rollers; means operatively connecting the disk with the cam-bars; and manual means for connecting the rocking shaft with the cam on the printing-cylinder.

5. The combination with the printing-cyl inder of a printing-machine, of inking-rollers and impression-cylinder both adapted to be tripped; automatic means, including a rocking] of the pawls adapted to move the latter into shaft, for tripping the impression-cylinder; a inoperative positions; cams and cam-bars for cam on the printing-cylinder to rock the rocktripping the inking-rollers; and means operaing shaft; an arm fast to the rocking shaft and tively connecting the disk with the cam-bars.

5 a disk loose thereon; oppositely-presented In witness whereof I have hereunto set my 5 abutments on the disk; pawls on the arm, each hand in the presence of two witnesses.

adapted to engage one of the disk-abutments; THOMAS MERRIFIELD NORTH. means in operative connection with the pawls Witnesses: to move them into position to engage the disk- T. R. G. PARKER,

10 ahutments; stationary abutments in the paths G. S. SENIOR. 

